This page explains what happens if Diazepam and Lisinopril are taken together, according to official sources.
Additive hypotension and central sedation
Diazepam reduces central sympathetic tone, which when added to lisinopril can exacerbate orthostatic lightheadedness and drowsiness.
Change positions slowly from supine to upright. Avoid driving until individual reaction to combination is established.
Last updated: Sep 25, 2026
Before changing or stopping any medicine, ask your doctor or pharmacist. Never stop your medicine on your own.